Effective: Contains vitamins, enzymes and plant growth promoters such as auxins and gibberellins.

Soil organisms play an incredibly important role in soil structure. Gro4 premium earthworm castings contain a multitude of these organisms that include beneficial bacteria, protozoa, nematodes, fungi and so much more. In a healthy soil ecosystem, soil organisms work together to transform and maximize available nutrients to be used as food for plants. Gro4 earthworm castings help sustain an active and balanced soil structure when added.